Hawaii County authorities charged a 21-year-old Pahoa man today in the stabbing of three people who work at the Hilo Medical Center Wednesday morning, and a fourth man was punched in the face.

Franklin Poulsen was charged with attempted second-degree murder, one count of first-degree terroristic threatening, two counts of first-degree assault and one count of third-degree assault.

His bail was set at $312,000.

Poulsen allegedly grabbed a 25-year-old woman, then choked and stabbed her in the hand.

He then allegedly stabbed a 35-year-old Hilo man and a 25-year-old Pepeekeo man, who were injured when they intervened.

A fourth man, 63, who also works at the hospital, was injured after the suspect allegedly punched him in the face, police said.

All the victims were treated for their injuries.